The premise behind Zombies, Run! is pretty simple - there are some zombies, and you're probably not going to want them to catch you. Fire up the app, stick some earbuds into your ear, and run. No, run! You typically don't spend too much time looking at your phone while using this app, but (wait, why did you stop moving, run!) the new update to version 3.0 will make sure the app looks holorific the next time you do.

One of the biggest drawbacks to buying apps on things like the Play Store is wondering if it does what you need it to do before you put your money on the line. AppSurfer, an India-based startup, is building a platform to alleviate this concern and give developers a web-based tool to let users test drive their apps before they buy. If this sounds familiar, it's because Amazon allows customers to do this very thing on its Appstore.

When we first took a look at Zombies, Run! a few days ago, I said that, while the concept is great, I hoped it would be $8 worth of amazing. Not to spoil the ending to this story right away, but the short version is: probably. This app could easily be worth $8 to many users. But not for the reasons you might think. And, before you start reaching for your wallet, you need to answer one very important question: are you willing to commit to a workout routine?

Since the invention of the smartphone, the number one concern on everyone's mind is "How can I use this to help prepare for the zombie apocalypse?" And if that's not your number one concern, it should be. Zombies, Run! is a game designed to augment your current running routine with a story and extra, *ahem*, motivation. Of the keeping-your-brains variety.

The game actually started as a Kickstarter project (but what doesn't these days?) and was released on iOS a few months ago.